var util = require('../../utils/util.js');
var api = require('../../config/api.js');

Page({
  data: {
    navList: [],
    goodsList: [],
    id: 0,
    currentCategory: {},
    scrollLeft: 0,
    scrollTop: 0,
    scrollHeight: 0,
    page: 1,
    limit: 10
  },
  onLoad: function(options) {
    // 页面初始化 options为页面跳转所带来的参数
    wx.setNavigationBarTitle({
      title: options.nm
    })
    var that = this;
    if (options.id) {
      that.setData({
        id: parseInt(options.id),
        vid: options.vid,
        nm: options.nm,
        tm: options.tm
      });
    }

    wx.getSystemInfo({
      success: function(res) {
        that.setData({
          scrollHeight: res.windowHeight
        });
      }
    });


    this.getCategoryInfo();

  },
  getCategoryInfo: function() {
    let that = this;
    util.request(api.GoodsTags, {
        vendorId: this.data.vid
      })
      .then(function(res) {
        if (res.errno == 0) {
          var c = {};
          // for (let key in res.data) {
          //   console.log(key, res.data[key]);
          //   if (res.data[key].id === that.data.id) {
          //     c = that.data;
          //   }
          // }
          c.dev = that.data.nm;
          that.setData({
            navList: res.data,
            currentCategory: {
              name: that.data.tm,
              dev: that.data.nm
            }
          });

          // 当id是L1分类id时，这里需要重新设置成L1分类的一个子分类的id
          // if (res.data.parentCategory.id == that.data.id) {
          //   that.setData({
          //     id: res.data.currentCategory.id
          //   });
          // }

          //nav位置
          let currentIndex = 0;
          let navListCount = that.data.navList.length;
          for (let i = 0; i < navListCount; i++) {
            currentIndex += 1;
            if (that.data.navList[i].id == that.data.id) {
              break;
            }
          }
          if (currentIndex > navListCount / 2 && navListCount > 5) {
            that.setData({
              scrollLeft: currentIndex * 60
            });
          }
          that.getGoodsList();

        } else {
          //显示错误信息
        }

      });
  },
  // 页面分享
  onShareAppMessage: function() {
    let that = this;
    return {
      title: that.data.goods.name,
      desc: that.data.limit,
      path: '/pages/categoryTags/categiry?id=' + that.data.id
    }
  },
  onReady: function() {
    // 页面渲染完成
  },
  onShow: function() {
    // 页面显示
  },
  onHide: function() {
    // 页面隐藏
  },
  getGoodsList: function() {
    var that = this;

    util.request(api.tagGoods, {
        tagId: that.data.id,
        page: that.data.page,
        limit: that.data.limit
      })
      .then(function(res) {
        that.setData({
          goodsList: res.data,
        });
      });
  },
  onUnload: function() {
    // 页面关闭
  },
  switchCate: function(event) {
    if (this.data.id == event.currentTarget.dataset.id) {
      return false;
    }
    var that = this;
    var clientX = event.detail.x;
    var currentTarget = event.currentTarget;
    if (clientX < 60) {
      that.setData({
        scrollLeft: currentTarget.offsetLeft - 60
      });
    } else if (clientX > 330) {
      that.setData({
        scrollLeft: currentTarget.offsetLeft
      });
    }
    this.setData({
      id: event.currentTarget.dataset.id
    });

    this.getCategoryInfo();
  }
})
